1 He says that technology makes it easier than ever for governments to identify people

题目

1 He says that technology makes it easier than ever for governments to identify people
第一个句子government后面括号里为什么不用identify?
2,A man who refused to give his name dived into the river yesterday morning (to save)a nine-year-old boy .括号中为什么不用saved
3.If you want to avoid (being charged)for late baggage,you'd batter chack in half an hour earlier.括号里为什么不用charging

答案

前两个问题属于一类,一个完整的英语句子不能出现两个谓语动词,如果需要用动词表达意义,其中一个要变成非谓语的形式.动词不定式具有名词,形容词和副词的特征,可以作主语、宾语、表语、定语、状语等.在第一句中的动词...